WO2015186680A1

WO2015186680A1 - Injection system using needleless syringe

Info

Publication number: WO2015186680A1
Application number: PCT/JP2015/065833
Authority: WO
Inventors: 良平山田
Original assignee: 株式会社ダイセル
Priority date: 2014-06-03
Filing date: 2015-06-02
Publication date: 2015-12-10
Also published as: EP3153133A4; JP6612017B2; JP2015228913A; EP3153133B1; EP3153133A1; US20170128182A1

Abstract

An injection system comprising: a needleless syringe; a moving passage connecting a first space, in which a plurality of subjects to be injected are housed, and a second space, into which the subjects to be injected move, said moving passage being equipped with the needleless syringe in such a manner that an injection port of the needleless syringe opens within the moving passage; a detection unit which is capable of detecting the movement of the subjects to be injected from the first space toward the second space through the moving passage; and a control unit which performs injection of a substance to be injected to the individual subjects to be injected from the injection port of the needleless syringe depending on the movement of the individual subjects to be injected, when the movement of the subjects to be injected is detected by the detection unit. According to this injection system, a number of subjects to be injected such as livestock can be injected while minimizing a burden of an operator and reducing sanitary problems.

Description

Needleless syringe injection system

The present invention relates to a system for injecting an injection target using a needleless syringe that injects an injection target substance without going through an injection needle.

Vaccination is required to protect livestock on farms from infectious diseases. However, since the number of livestock is generally very large, if one animal is injected for vaccination one by one, the time required will be tremendous and the work burden on the operator will be considerable. Therefore, Patent Document 1 discloses a technique that enables continuous vaccination of livestock. In this technique, an operator presses and releases a switch portion provided in a syringe body, thereby adjusting the flow of compressed air in the syringe body of the syringe, and injecting the injection solution from the syringe body to the outside and the syringe The syringe is configured so that filling of the injection solution into the body is repeated. In the syringe according to the technology, an injection needle is used to deliver an injection solution to livestock.

Japanese Utility Model Publication No. 7-24314

According to the prior art, filling and injection of the injection solution into the needle-injected syringe are repeated, triggered by the operator pressing and releasing the switch. Therefore, it is necessary for an operator to hold a syringe for livestock or the like, which is an injection target, and to stab the injection needle into the injection target before performing the above switch operation. Therefore, when the worker alone injects the livestock, it is necessary to operate the syringe while suppressing the movement of the livestock, and the burden on the worker is not necessarily light. Moreover, in order to reduce the work burden of one worker, it is necessary to assign a plurality of workers to livestock injection.

In addition, since the syringe used in the prior art is a needled syringe, there is a case where the same injection needle is used across a plurality of livestock, and in that case, the possibility that some infectious disease spreads between livestock is wiped away. Absent. In addition, there is a possibility of infection to the worker when the worker contacts the injection needle. Furthermore, in general, when injecting livestock and the like, since there are many injection targets, the burden imposed on the operator from the viewpoint of injection management such as applying some markings to the injected livestock is not small. . In particular, when an injection is performed on a fish, the fish is returned to a predetermined place such as a ginger after the injection is completed, and therefore, injection management becomes more difficult than on-shore livestock.

Therefore, in view of the above-described problems, the present invention reduces the burden on the operator as much as possible when injection is performed on a large number of injection objects such as livestock and the occurrence of various health problems. It aims at providing the injection system which controls.

In order to solve the above problems, the present invention adopts the following configuration. Specifically, the present invention is an injection system using a needleless syringe that injects an injection target substance into an injection target by injecting the injection target substance from an injection port without using an injection needle. Is a movement path connecting a first space in which a plurality of injection objects are accommodated and a second space to which the plurality of injection objects are moved, and the injection port of the needleless syringe is the movement path A moving path in which the needle-free injector is installed so as to open inside, and a detection unit capable of detecting movement in the moving path for the injection target existing in the first space to go to the second space When the movement of the injection object is detected by the detection unit, the injection target substance is ejected from the injection port of the needleless syringe according to the movement of the injection object for each injection object. A section.

The needleless syringe according to the present invention does not deliver the injection target substance to the inside of the injection target through the injection needle, but injects the injection target substance from the syringe body, and directly injects the injection target substance with the injection energy by the injection energy. The injection is performed in such a manner that the surface of the object is perforated and the injection target substance is delivered into the injection object. And as an injection target substance inject | emitted with the said needleless syringe, the component which should be delivered to an injection target object is included. Therefore, as for the physical form of the injection target substance inside the needleless syringe, at least if it can be ejected from the syringe body, it can be any liquid, gel-like fluid, powder, granular solid, etc. It doesn't matter. For example, the injection target substance is a liquid, and even if it is a solid, it may be a gel-like solid as long as fluidity enabling injection is ensured. The injection target substance includes a component to be delivered to the target site of the injection target, and the component may exist in a state dissolved in the injection target substance, or the component is simply dissolved without being dissolved. It may be in a mixed state.

Here, in the above injection system, the needleless syringe is provided in the moving passage connecting the first space and the second space. The first space contains a plurality of injection objects, and each injection object moves from the needleless syringe provided in the movement path to the second space in the process of moving to the second space through the movement path. Configured to receive an injection of a substance.

At this time, the detection unit detects the movement of the injection target through the movement path toward the second space. Then, the injection operation of the needleless syringe by the control unit is controlled according to the detection result. That is, when the detection unit detects that the injection target object is sequentially moved to the second space in the movement path, the injection target substance from the needleless syringe is placed in front of the injection port by the control unit. Injection to the injection target is realized by being injected to the target.

In the injection system configured as described above, the injection of the injection target substance by the needleless syringe is controlled with the detection of the movement of the injection target in the movement path by the detection unit as a trigger. Therefore, the operator does not need to touch the injection target in principle and does not need to touch the needleless syringe itself. Therefore, it is considered that the work load on the worker is extremely reduced. Moreover, since the syringe itself does not have an injection needle, the possibility of inducing various hygiene problems (for example, the spread of the above-mentioned infectious diseases) due to the injection needle is suppressed. The detection unit detects or predicts that the injection target reaches the injection port of the needleless syringe, and uses a sensor or a camera that applies ultrasonic waves, infrared rays, or the like to the injection target. A detection device based on image processing can be used. However, any sensor that can detect the above can be used in accordance with the installation location.

Here, in the above configuration, it does not necessarily prevent the operator from touching the injection target or the needleless syringe for a predetermined purpose. For example, in order to accurately inject the injection target substance onto the injection target, the operator may touch the needleless syringe and make the adjustment. As another example, an operator may perform an operation such as guiding an injection object in order to make the injection object move smoothly in the movement path. Even in these cases, it can be easily understood that the burden on the operator regarding injection is greatly reduced. In addition, regarding the guidance of the injection target, the injection system may further include a guide device that moves the injection target existing in the first space to the second space via the moving passage. This eliminates the need for the operator himself to guide the injection target.

Here, the needleless syringe according to the present invention can be used for the injection if the injection of the injection target substance by the control unit can be performed on the injection target by using the detection result by the detection unit as a trigger. Various known energy generation modes can be employed as the energy source. For example, an igniter that is ignited by an ignition device or a gas generating agent that generates gas by combustion can be employed. When using the combustion energy of explosives as injection energy, for example, explosives containing zirconium and potassium perchlorate, explosives containing titanium hydride and potassium perchlorate, explosives containing titanium and potassium perchlorate Explosives containing aluminum and potassium perchlorate, explosives containing aluminum and bismuth oxide, explosives containing aluminum and molybdenum oxide, explosives containing aluminum and copper oxide, explosives containing aluminum and iron oxide, Or the explosive which consists of several combinations among these may be sufficient. The characteristics of these igniting agents are that even if the combustion product is a gas in a high temperature state, it does not contain a gas component at room temperature. When used for injection, efficient injection into a shallower part of the injection target region of a living body becomes possible. In addition, when the generated energy of the gas generating agent is used as the injection energy, the gas generating agent includes various gases used in single-base smokeless explosives, gas generators for airbags and gas generators for seat belt pretensioners. It is also possible to use a generator.

Further, as an aspect of the drive unit other than the above, the energy of an elastic member such as a spring may be used as the injection energy of the injection target substance. For example, by using an electromagnetic valve or solenoid actuator that is driven by voltage application from a power circuit, the piston fixed by the biasing spring is released from the locked state, so that the accumulated biasing spring Elastic energy can be used as injection energy.

Furthermore, as an alternative method, the pressurized gas energy may be used directly or indirectly as the injection energy of the injection target substance. Specifically, the needleless syringe includes a syringe serving as a space for storing a predetermined volume of the injection target substance, a piston configured to be reciprocated by supplying and discharging pressurized air, and the piston An air valve that drives a piston, and an air cylinder that pressurizes the injection target substance accommodated in the syringe by reciprocating movement of the piston; and the injection target substance pressurized by the piston And a nozzle including the injection port for injecting toward an object. In addition, the injection system further includes a gas supply device that supplies the pressurized gas that drives the piston inside the air cylinder to the needleless syringe. The piston of the air cylinder may inject the injection target substance via a plunger or the like.

In the needleless syringe configured as described above, the energy of the pressurized gas supplied from the gas supply device is used as the injection energy of the injection target substance. That is, the supplied pressurized gas reciprocates the piston of the air cylinder, and the reciprocating motion stores and fills the injection target substance in the syringe and discharges the injection target substance from the syringe to the nozzle. It will be. And the injection target substance discharged | emitted to the nozzle will be inject | emitted toward the injection target object from the injection port of a nozzle. In addition, since the pressure of the pressurized gas supplied by the gas supply device becomes an injection energy source of the injection target substance, the pressure of the pressurized gas is set so that the injection target substance suitable for the injection target is injected. It is preferably adjusted.

Here, in the above injection system, the needleless syringe is configured to transfer the injection target substance from the vial to the syringe in a communication path formed between the syringe and the vial containing the injection target substance. In the first valve that allows flow in only one direction, and the discharge passage formed between the nozzle and the syringe, the injection target substance can flow in only one direction from the syringe to the nozzle. And a second valve. Then, when the piston moves backward in the air cylinder and the pressure in the syringe becomes negative, the first valve is opened and the second valve is closed, and the communication from the vial is performed. The injection target substance may be supplied into the syringe via a passage. In addition, instead of such a configuration, the open / close valve states of the first valve and the second valve are electronically controlled, so that the injection target substance is stored and filled in the syringe, and the injection target substance is transferred from the syringe. Emission may be realized.

The injection system described above is provided in the movement path based on the movement detection result of the injection object by the detection unit, and temporarily stops the movement of the injection object in the movement path. You may further provide the holding | maintenance part which hold | maintains a target object and makes the said injection port of the said needleless syringe contact | abut on the body surface of this injection target object. By providing the holding part in this way, the movement of the injection target moving through the moving passage is temporarily stopped, and the injection port of the needleless syringe is brought into contact with the injection target, thereby realizing more reliable injection. can do.

Further, the injection system up to the above has moved from the first space to the second space in a predetermined passage range on the second space side from the injection port installation site of the needleless syringe in the moving passage. You may further provide the blocking part which blocks | prevents that an injection target returns toward this 1st space. By providing the blocking unit in this way, it is possible to physically suppress the injection object injected by the needleless syringe from returning to the first space via the moving passage. This greatly contributes to reducing the burden of injection management for the elderly. As an example of a specific configuration of the blocking portion, the blocking portion is inclined toward the second space side with respect to the injection port installation site in the moving passage and protrudes to the inside of the moving passage. A plurality of inclined plates may be used. In addition, you may prevent that an injection target object returns to 1st space by another aspect.

Here, in the injection system described above, the first space, the second space, and the moving passage may be disposed in water, in which case the moving object is a living body that can exist in water, for example, It may be a fish. For underwater fish, the load of injection work is greater than on-land injection objects (for example, livestock such as cows and chickens). Therefore, the injection system according to the present invention can be suitably applied.

According to the injection system according to the present invention, when injection is performed on a large number of injection objects such as livestock, the burden on the operator is reduced as much as possible and the occurrence of various hygiene problems is suppressed. be able to.

It is the schematic of the injection system by the needleless syringe concerning this invention. It is a figure which shows schematic structure of the needleless syringe used with the injection system shown in FIG. It is a figure which shows schematic structure of the holding | maintenance apparatus used with the injection system shown in FIG. It is a flowchart of the injection process performed with the injection system shown in FIG.

Hereinafter, an injection system 1 according to an embodiment of the present invention will be described with reference to the drawings. In addition, the structure of the following embodiment is an illustration and this invention is not limited to the structure of this embodiment.

FIG. 1 is a diagram showing a schematic configuration of an injection system 1. The injection system 1 is a system that performs injection of a chemical solution (corresponding to the injection target substance of the present invention) for preventing infectious diseases on aquacultured fish in water using a needleless syringe 20. In the process of moving a plurality of cultured fish existing in one space S1 to the second space S2, which is a space different from the first space S1, injection of a chemical solution is performed on the cultured fish. In the following description of the present application, the injection target substances injected into the injection target by the needleless syringe 20 are collectively referred to as “medical solution”. However, this is not intended to limit the content or form of the injected substance. In the injection target substance, the component to be delivered to the cultured fish or the like that is the injection target may or may not be dissolved, and the injection target substance is also injected to the injection target by the needleless syringe 20. As long as it can be obtained, its specific form is not limited, and various forms such as liquid and gel can be adopted.

Here, the first space S1 and the second space S2 are spaces formed by being isolated from the surroundings so that the cultured fish can move only by the moving space 7 formed by the moving passage 6. Therefore, the cultured fish cannot travel between the first space S1 and the second space S2 without going through the moving space 7. Moreover, the movement space 7 has a cross-sectional area in which only about one cultured fish to be injected with the chemical solution can move. Therefore, when the cultured fish moves from the first space S1 to the second space S2, the cultured fish passes through the moving space 7 one by one in front of

ultrasonic sensors

8a and 8b and the injection port 21 described later. Become. In addition, as an example of 1st space S1 and 2nd space S2, the ginger etc. which are generally utilized for aquaculture can be illustrated, In that case, by connecting two ginger with the movement path | route 6, in FIG. It is possible to form the injection system 1 shown.

Here, the moving passage 6 is a passage main body that connects the first space-side connection portion 6b connected to the first space S1, the second space-side connection portion 6c connected to the second space S2, and both the connection portions. 6a. And the cultured fish which exists in 1st space S1 enters into the movement space 7 from the 1st space side connection part 6b, passes through the movement space 7 in the channel | path main body 6a and the 2nd space side connection part 6c, and is 2nd space S2. It is possible to move to. The second space-side connecting portion 6c is formed by a plurality of inclined plates that are inclined to the second space S1 side and are arranged so as to protrude from the inner wall of the second space-side connecting portion 6c to the moving space 7. The entry blocking device 11 (which corresponds to the blocking unit according to the present invention) is provided. Since the inclined plate of the entry blocking device 11 is inclined toward the second space S2, the movement of the cultured fish from the first space S1 to the second space S2 can be performed relatively easily, while the second space Since the entrance to the moving space 7 is formed to be relatively small when viewed from the cultured fish moved to S2, it is possible to prevent the cultured fish from returning from the second space S2 to the first space S1. It becomes possible.

Also, a needleless syringe 20 is installed in the passage body 6a. When the needleless syringe 20 is installed in the passage main body 6a, the injection port 21 is exposed to the moving space 7. Here, a structural example of the needleless syringe 20 will be described with reference to FIG. FIG. 2 is a cross-sectional view of the needleless syringe 20 along the longitudinal direction. The left side of the drawing is the distal end side of the needleless syringe 20 and the injection port 21 is disposed. In addition, the description of “front end side” in the present application refers to a side closer to the injection port 21 than “base end side”, and accordingly, the left side in FIG. 2 corresponds to “front end side”. .

The needleless syringe 20 can reciprocate in an air valve 30 for accumulating and releasing pressurized air supplied from the outside, and in a sliding hole 28 formed in the syringe body 20a using the pressurized air. And an air cylinder including the piston 29 formed as described above. Specifically, pressurized air is supplied to the air valve 30 through a supply tube 3 from a pressurized air supply device (compressor) 2 disposed outside the syringe. And in the air valve 30, the pressure accumulation chamber (not shown) which accumulate | stores the supplied pressurized air, and the accumulated pressure air are open | released toward the sliding hole 28 where the piston 29 is arrange | positioned. A release portion (not shown) is provided. Note that switching between accumulation and release of pressurized air in the air valve 30 is controlled by pressing and releasing the switching button 31. The pressing and releasing of the switching button 31 is performed by the solenoid activation device 4 that is driven in accordance with an activation signal from the control device 10 shown in FIG. 1 (this device corresponds to the control unit according to the present invention). When the solenoid activation device 4 receives the activation signal from the control device 10, a drive current flows through the built-in solenoid, the plunger is driven by the magnetic force generated by the solenoid, and the switch button 31 can be pressed. When the drive current is stopped, the plunger returns and the pressing of the switching button 31 is released.

Here, a positioning spring (not shown) for determining the relative position of the piston 29 with respect to the air valve 30 is provided between the piston 29 arranged in the sliding hole 28 and the air valve 30. Therefore, although the piston 29 is movable in the sliding hole 28, the piston 29 is in a state of receiving a biasing force from the positioning spring during the movement. The state shown in FIG. 2 represents a state where pressurized air is accumulated in the air valve 30, that is, a state where pressurized air is not released from the air valve 30 to the piston 29. The relative position of the piston 29 with respect to the air valve 30 in this state is a state in which the piston 29 is disposed on the air valve 30 side by the biasing force of the positioning spring.

Further, in the state shown in FIG. 2, a syringe 24, which is a space in which a drug solution (injection solution) ejected by the needleless syringe 20 is accommodated, is formed on the tip end side (the side opposite to the air valve 30) of the piston 29. . In the syringe 24, a chemical solution supply passage 25 (the passage corresponds to the communication passage according to the present invention) is opened at a location that does not interfere with the reciprocating piston 29. A vial 5 that stores a chemical solution is connected to the chemical solution supply passage 25 via a first valve 26. When the first valve 26 is in the open state, the chemical solution can be supplied from the vial 5 to the syringe 24 through the chemical solution supply passage 25. The first valve 26 restricts the chemical solution from flowing from the vial 5 toward the syringe 24 in only one direction. Therefore, when the drug solution flows from the syringe 24 toward the vial 5, the first valve 26 is closed by the force generated by the flow. Therefore, in the first valve 26, the valve is pressed in the direction of the vial 5 by elastic means such as a spring and is normally closed. However, the opening and closing of the first valve 26 may be electronically controlled by the control device 10.

Further, the distal end side of the syringe 24 communicates with the discharge passage 22 via the second valve 23. An end portion on the front end side of the discharge passage 22 corresponds to the injection port 21. Therefore, when the second valve 23 is in the open state, the chemical liquid in the syringe 24 can be injected from the injection port 21 via the discharge passage 22. Note that the second valve 23 restricts the chemical liquid from flowing from the syringe 24 toward the discharge path 22 in only one direction. The second valve 23 is normally closed while the valve is pressed toward the syringe 24 by an elastic means such as a spring. Only when the chemical solution flows from the syringe 24 toward the discharge path 22, the second valve 23 is opened by the force of the flow. However, the opening and closing of the second valve 23 may also be electronically controlled by the control device 10.

In the needleless syringe 20 configured as described above, the liquid medicine in the vial 5 can be continuously ejected by the reciprocating motion of the piston 29 in the sliding hole 28 and the opening and closing of the first valve 26 and the second valve 23. Is possible. Below, the continuous injection operation | movement of the chemical | medical solution is demonstrated.
(1) First Operation In the first operation, the first valve 26 is closed, the second valve 23 is closed, and pressurized air is sent from the compressor 2 to the air valve 30. Then, the pressurized air is accumulated in the valve 30 to a predetermined pressure. The predetermined pressure is a pressure for pressurizing the piston 29 so that the chemical liquid can be injected when the pressurized air is released by a second operation described later. In the first operation, the syringe 24 is filled with a chemical as a result of a third operation described later.
(2) Second Operation In the second operation, the pressurized air accumulated in the air valve 30 is released to the piston 29 by pressing the switching button 31. As a result, the piston 29 propels the inside of the sliding hole 28 toward the distal end side against the urging force received from the positioning spring. Since the syringe 24 is filled with the chemical solution, the chemical solution is discharged out of the syringe 24 by the propulsion of the piston 29. At this time, the chemical solution flows toward the first valve 26 and the second valve 23, but the first valve 26 is closed by the flow of the chemical solution, and the chemical solution does not flow into the vial 5. The second valve is opened by the flow of the chemical liquid, and the chemical liquid flows toward the discharge path 22 and is injected from the injection port 21.
(3) Third Operation In the third operation performed after the injection of the chemical solution by the second operation, the pressed air released in the second operation is released from the syringe body 20a by releasing the pressing of the switching button 31. The piston 29 is returned to the original position (position shown in FIG. 2), that is, the position of the piston in the first operation by the positioning spring. Then, the volume of the syringe 24 is restored by the return operation of the piston 29, and the inside of the syringe 24 is in a negative pressure state. Therefore, the biasing force from the elastic means is also applied, the second valve 23 is closed, and the first valve 26 is closed. Is opened, and the chemical stored in the vial 5 is sucked into the syringe 24 and filled. And after completion | finish of 3rd operation | movement, the 1st operation | movement and after are repeated again, and the continuous injection by the needleless syringe 20 is attained.

Here, returning to FIG. 1, in the injection system 1, the holding device 40 is disposed at a position facing the injection port 21 of the needleless syringe 20 of the passage main body 6 a. The holding device 40 is a device that holds the cultured fish and presses the cultured fish against the injection port 21 when the cultured fish moves from the first space S1 toward the second space S2 in the moving space 7. . A schematic configuration of the holding device 40 will be described with reference to FIG. The holding device 40 includes a device main body 41 disposed outside the passage main body 6a, a holding plate 42 extending along the passage main body 6a, and a foot 43. The holding plate 42 is connected to the apparatus main body 41 via the foot 43, and the holding plate 42 is disposed in the moving space 7 in the passage main body 6a. And the leg part 43 is comprised so that adjustment of the protrusion amount from the apparatus main body 41 is possible, and the distance of the holding | maintenance board 42 and the injection port 21 becomes narrow because the leg part 43 protrudes more than the apparatus main body 41, It is possible to hold the cultured fish that moves in the moving space 7 and press the body against the injection port 21. The protruding amount of the foot 43 is controlled by the control device 10, and a suitable sealing process is performed so that water does not enter the inside of the device main body 41 when the protruding amount of the foot 43 changes. The protrusion and storage of the foot portion 43 may be performed by supplying or removing compressed air from the compressor 2.

In the injection system 1 shown in FIG. 1, the needleless syringe 20 and the holding device 40 are appropriately controlled by the control device 10 so that the medicinal solution is injected into the cultured fish moving from the first space S1 to the second space S2. Processing is executed. And in order to promote the movement to this 2nd space S2 of this cultured fish, the guidance apparatus 12 is installed in 1st space S1. For example, the guidance device 12 excites a plurality of cultured fish existing in the first space by stimulating light, sound, etc., and the cultured fish passes through the moving space 7 which is also a space that can only escape from the first space S1. May be configured to drive the air to the second space. In addition, the stimulus of the light and sound given can be determined appropriately in consideration of the biological characteristics of the target cultured fish.

As another method of the guidance device 12, the volume of the first space S1 is gradually decreased, or the shape of the first space S1 is deformed so that the cultured fish is difficult to physically stay in the first space S1. It may be a guiding device to be formed. Moreover, the structure which physically contacts with the cultured fish and drives the said cultured fish into the 1st space side connection part 6b is also employ | adopted as the induction | guidance | derivation apparatus 12, even if the magnitude | size and space shape of 1st space S1 itself do not change. Can do.

Furthermore, an ultrasonic wave that detects the presence of cultured fish passing through the corresponding moving space 7 in the vicinity of the connection portion between the first space side connection portion 6b and the first space side connection portion 6b of the passage body 6a.

Sensors

8a and 8b are installed. The

ultrasonic sensors

8 a and 8 b are installed at an appropriate distance so that the respective detection ranges do not overlap with each other, and the detection signals of the respective ultrasonic sensors are passed to the control device 10. 8b and the control device 10 are electrically connected.

In the injection system 1 configured as described above, the injection processing shown in FIG. 4 is repeatedly executed by the control device 10, thereby realizing continuous injection of the medicinal solution to the cultured fish as described above. The control device 10 is a computer having a memory and an arithmetic device, and the injection process shown in FIG. 4 is executed by executing a predetermined control program.

First, in S101, based on the detection signals from the

ultrasonic sensors

8a and 8b, the movement detection of the cultured fish existing in the first space S1 in the moving space 7 from the first space side connecting portion 6b to the passage body 6a is detected. Is done. Specifically, first, when the presence of any object is detected by the ultrasonic sensor 8b within a predetermined time range from the time when the presence of any object is detected by the ultrasonic sensor 8a close to the first space S1, It is assumed that it is detected that the cultured fish in the first space S1 has moved through the moving space 7 to the second space. Note that the predetermined time range is a time width that is assumed to be required to pass between the two ultrasonic sensors when the cultured fish performs the assumed movement. Therefore, in this embodiment, when the detection result is obtained by the ultrasonic sensor 8b at a time interval outside the predetermined time range, or when only the ultrasonic sensor 8a is detected, the inside of the moving space 7 is obtained. It is considered that the cultured fish is not moving toward the second space S2, and it is not necessary to perform injection with the needleless syringe 20. In detecting the movement of the cultured fish, it may be determined that the movement of the cultured fish is detected when a condition other than the above-described detection conditions is satisfied. In addition, in order to perform accurate detection, an apparatus that detects the passage of the injection target in the moving space 7 by a camera or the like by image analysis can be used in combination with the ultrasonic sensor. When the process of S101 ends, the process proceeds to S102.

In S102, the time for the target cultured fish to reach the injection position by the needleless syringe 20 is calculated based on the detection result in S101. Specifically, when the presence of the aquaculture fish is detected by the

ultrasonic sensors

8a and 8b, the time when the aquaculture fish moves to the moving space 7 from the interval between the respective detection times and the installation distance of both the ultrasonic sensors. The moving speed is calculated. Then, based on the calculated speed and the installation position of the needleless syringe 20 (for example, the distance between the ultrasonic sensor 8b and the needleless syringe 20), there is no change after the cultured fish passes in front of the ultrasonic sensor 8b. The time required to pass in front of the injection port 21 of the needle injector 20 can be calculated as the arrival time. When the process of S102 ends, the process proceeds to S103.

In S103, when the cultured fish is assumed to pass in front of the injection port 21 of the needleless syringe 20 based on the arrival time calculated in S102, the cultured fish is held by the holding plate 42, and the body is removed from the injection port. The holding device 40 is activated so as to come into contact with 21. When the process of S103 ends, the process proceeds to S104.

In S104, it is determined whether or not the holding device 40 is activated and the cultured fish is held by the holding plate 42. For example, the holding state of the cultured fish can be determined by detecting the force transmitted through the foot 43 by a force sensor (not shown) installed in the apparatus main body 41. Alternatively, if the projection amount of the foot 43 is determined in advance in consideration of the expected size of the cultured fish without using a detection device such as a force sensor, the holding device 40 is activated. The determination of whether or not the foot 43 has protruded by a predetermined protrusion amount may be replaced with the determination of the holding state. If an affirmative determination is made in S104, the process proceeds to S105, and if a negative determination is made, the determination in S104 is performed again.

Next, in S105, the medicinal solution is injected by the needleless syringe 20 in a state where the cultured fish to be injected is held by the holding plate 42 of the holding device 40. The injection of the chemical solution is realized according to the first operation and the second operation described above. When the process of S105 ends, the process proceeds to S106. In S106, after the injection of the chemical solution by the needleless syringe 20 is completed in S105, the syringe 24 is filled with the chemical solution according to the third operation.

As described above, according to the above injection processing, when the cultured fish that is the injection target existing in the first space S1 moves to the second space S2 through the moving space 7, the

ultrasonic sensors

8a and 8b are used. The movement is detected, and the cultured fish is automatically positioned with respect to the needleless syringe 20. In this positioning state, since the injection port 21 is in contact with the body of the cultured fish, it is possible to suitably realize injection by the needleless syringe 20 that injects the drug solution using pressurized air. . In addition, since the blocking device 11 having the inclined plate is arranged in the second space side connection portion 6c, the cultured fish that has been injected and moved to the second space S2 returns to the first space S1, and injection management is performed. It becomes possible to avoid a difficult state. Therefore, it is possible to realize continuous automatic injection of a medicinal solution for a plurality of cultured fish by repeatedly executing the injection process by the control device 10. In addition, a gate is arranged in the 1st space side connection part 6b so that the next injection target object (cultured fish) may not enter the movement passage 6 until the injection by the needleless syringe 20 is completed, and the invasion of the cultured fish is prevented. It is good to do. The gate is opened / closed by the control device 10 and may be closed once after the passage is detected by the ultrasonic sensor 8a, for example, and may be opened again when the injection is completed (the holding device 40 is released).

<Modification 1>
In the injection system 1 shown in FIGS. 1 to 3, the passage body 6a is arranged so that the injection port 21 of the needleless syringe 20 and the holding plate 42 of the holding device 40 face each other. In this configuration, the body of the cultured fish is pressed against the injection port 21 by the holding plate 42. On the other hand, as a modification thereof, the needleless syringe 20 and the holding device 40 may be configured integrally so that the injection port 21 of the needleless syringe 20 opens on the holding plate 42. In this case, after the ejection port 21 comes into contact with the body of the cultured fish together with the holding plate 42, the cultured fish is pressed against the inner wall of the opposing passage main body 6a. Even in such a form, when the injection by the needleless syringe 20 is executed, the injection port 21 and the body of the cultured fish are in contact with each other, so that a suitable injection of the chemical solution can be realized.

<Modification 2>
In the needleless syringe 20 used in the above embodiment, the release energy by the pressurized air is used for the propulsive force of the piston 29. Instead of this form, even if a plurality of igniters loaded with explosives are mounted and the plurality of igniters are sequentially activated, a syringe that realizes continuous injection of a chemical solution is employed as the needleless syringe 20 I do not care. In this case, the igniter and the piston 29 are arranged so that combustion products generated by the explosive combustion in the igniter pressurize the piston 29. Further, a gas generating agent or the like that burns with the combustion products and generates gas can be further disposed between each igniter and the piston 29. As an example of the gas generating agent, a single base smokeless gunpowder composed of 98% by mass of nitrocellulose, 0.8% by mass of diphenylamine and 1.2% by mass of potassium sulfate can be mentioned. It is also possible to use various gas generating agents that are used in gas generators for airbags and gas generators for seat belt pretensioners.

The igniter used in the igniter preferably includes an explosive (ZPP) containing zirconium and potassium perchlorate, an explosive containing titanium hydride and potassium perchlorate (THPP), and titanium and potassium perchlorate. Gunpowder (TiPP), Gunpowder containing aluminum and potassium perchlorate (APP), Gunpowder containing aluminum and bismuth oxide (ABO), Gunpowder containing aluminum and molybdenum oxide (AMO), Gunpowder containing aluminum and copper oxide (ACO) , Explosives comprising aluminum and iron oxide (AFO), or explosives composed of a combination of these explosives. These explosives generate high-temperature and high-pressure plasma at the time of combustion immediately after ignition. However, when the combustion product is condensed at a normal temperature and does not contain a gas component, the generated pressure rapidly decreases. As long as appropriate injection is possible, other explosives may be used as igniting agents.

<Modification 3>
Although the injection system 1 which concerns on said Example implement | achieves the injection of the chemical | medical solution with respect to the cultured fish which exists in water, it replaces with the aspect, and is with respect to the livestock (for example, a cow, a pig, etc.) which exists on land. It is possible to apply. In this case, since there is no water between the needleless syringe 20 and the livestock, if the injection speed of the chemical liquid ejected from the needleless syringe 20 is sufficiently high, the injection port 21 and the body of the livestock In some cases, it is possible to inject the drug solution without any problem even if the distance is slightly apart. In such a case, the holding device 40 shown in FIGS. 1 and 3 is not necessarily provided. Of course, the holding device 40 may be installed in the injection system 1 in order to inject the drug solution more stably.

1 .... Injection system 2 .... Pressurized air supply device (compressor)
4 .... Solenoid activation device 5 .... Vial 6 .... Movement passage 7 ....

Movement space

8a, 8b ...... Ultrasonic sensor 10 .... Control device 11 .... Blocking device 12... Guiding device 20... Needleless syringe 21... Injection port 22 ... Discharge passage 23 ... Second valve 24 ... Syringe 25. Chemical solution supply passage 26... First valve 28... Sliding hole 29 ... Piston 30 ... Air valve 31 ... Switching button 40 ... Holding device 42 ... Holding plate

Claims

A needleless syringe for injecting the injection target substance into the injection target by injecting the injection target substance from the injection port without going through the injection needle;
A movement path connecting a first space in which a plurality of injection objects are accommodated and a second space to which the plurality of injection objects are moved, wherein the injection port of the needleless syringe is located inside the movement path A moving passage in which the needleless syringe is installed so as to open to
A detection unit capable of detecting movement in the movement path for the injection target existing in the first space to go to the second space;
When the detection unit detects movement of the injection object, a control unit performs injection of the injection target substance from the injection port of the needleless syringe according to the movement of the injection object for each injection object; ,
A needleless syringe injection system comprising:
The needleless syringe is
A syringe serving as a space for accommodating a predetermined volume of the injection target substance;
The injection having a piston formed so as to be able to reciprocate when pressurized air is supplied and discharged, and an air valve for driving the piston, and is accommodated in the syringe by the reciprocating motion of the piston An air cylinder that pressurizes the target substance;
A nozzle including the injection port for injecting the injection target substance pressurized by the piston toward the injection target;
Have
The injection system comprises:
A gas supply device that supplies the pressurized gas that drives the piston inside the air cylinder to the needleless syringe;
An injection system using a needleless syringe according to claim 1.
The needleless syringe is
A first valve that allows the injection target substance to flow in only one direction from the vial toward the syringe in a communication path formed between the syringe and the vial containing the injection target substance;
A second valve that allows the injection target substance to flow in only one direction from the syringe toward the nozzle in a discharge passage formed between the nozzle and the syringe;
Have
When the first valve is in the open state and the second valve is in the closed state, when the piston moves backward in the air cylinder and the pressure in the syringe becomes negative, the vial passes through the communication path. A substance to be injected is supplied into the syringe,
An injection system using a needleless syringe according to claim 2.
Based on the detection result of the movement of the injection object by the detection unit, the movement of the injection object in the movement passage is temporarily stopped to hold the injection object, and the injection object A holding part for bringing the injection port of the needleless syringe into contact with the body surface of an object, further comprising:
An injection system using a needleless syringe according to any one of claims 1 to 3.
The injection object that has moved from the first space to the second space within a predetermined passage range on the second space side from the injection port installation site of the needleless syringe in the moving passage is the first space. Further comprising a blocking part for blocking the return toward
An injection system using a needleless syringe according to any one of claims 1 to 4.
The blocking portion is a plurality of inclined plates that are inclined toward the second space side with respect to the installation portion of the injection port in the moving passage and project inside the moving passage.
An injection system using a needleless syringe according to claim 5.
A guidance device for moving the injection target existing in the first space to the second space via the movement path;
An injection system using a needleless syringe according to any one of claims 1 to 6.
The first space, the second space, and the moving passage are disposed in water,
The moving object is a living body that can exist in water.
An injection system using a needleless syringe according to any one of claims 1 to 7.